Hole in the wall of one of the buildings in the ruins of the abandoned Nike missile base on Sweeney Ridge, in the Golden Gate National Recreation Area.

Shot with the Nikon D70s and the 18-70mm f/3.5-4.5 zoom at 70mm, ISO 400, f/4.5, shutter 1/80 sec. White balance, exposure, contrast, saturation, and highlights adjustments in Aperture.